# PUB-540-Unit3-Creating2x2ContingencyTable-1.docx

PUB-540-Unit3-Creating2x2ContingencyTable-1.docx Creating a 2×2 Contingency TableCreating a 2×2 contingency table is very useful in calculating a variety of public health measurements, including sensitivity and specificity, negative and positive predictive value, risk ratios, attack rate ratios, and odds ratios. Don’t use plagiarized sources. Get Your Custom Essay on PUB-540-Unit3-Creating2x2ContingencyTable-1.docx Just from \$9/Page or 300 words Order Now A 2×2 table is actually a 3×3 table when you include the rows and columns for the totals. If you are setting up a table to measure the sensitivity and specificity of a test or its negative and positive predictive values, you should put the test results on the y-axis (rows) and the actual presence of disease on the x-axis (columns).DiseaseNo DiseaseTotalTest (+)(a)(b)a + bTest (-)(c)(d)c + dTotala + cb + da + b + c + dThe highlighted section is where you will enter the data for each corresponding cell. You can set up the table switching the rows and columns but you will generally see them set up in this format with test results on the y-axis and disease on the x-axis.Setting up a table to measure the association of a risk factor or exposure is similar, with the outcome or disease on the x-axis and the presence of the risk factor or exposure on the y-axis.DiseaseNo DiseaseTotalExposure (+)(a)(b)a + bExposure (-)(c)(d)c + dTotala + cb + da + b + c + dNote: You can set up the table differently but you will need to be cognizant of which numbers you are putting in your numerator and denominator for the measure you are calculating. For example:Exposure (+)Exposure (-)TotalNo Disease(b)(d)b + dDisease(a)(c)a + cTotala + bb + ca + b + c + d© 2019. Grand Canyon University. All Rights Reserved..awasam-promo { background-color: #9ED5EA; color: white; text-align: center; padding: 10px;}.button { background-color: #4CAF50; border: none; color: white; padding: 10px 20px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer; border-radius: 10px;}.awasam-alert { color: red;} Looking for a similar assignment? Get help from our nursing qualified experts! Order Now

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